Move Flask secret key to an environment variable

Author: fuzzy69

config.py

@@ -1,5 +1,6 @@
 # -*- coding: UTF-8 -*-
 
+from os import environ
 from os.path import abspath, dirname, join
 from time import strftime
 
@@ -36,7 +37,7 @@
 HOST = "127.0.0.1"  # Dev
 # HOST = "0.0.0.0"  # Production
 PORT = 4000
-SECRET_KEY = "12345"  # TODO: move out the sensitive data
+SECRET_KEY = environ.get("FLASKAPP_KEY")
 
 LOGGING = True
 LOG_FILE = join(LOG_DIR, "flaskapp_{}.log".format(strftime(TIMESTAMP_FORMAT).replace(' ', '_')))

main.py

@@ -8,7 +8,7 @@
 from application.misc import parse_arguments, setup_logging
 from application.shared.filesystem import ensure_dir
 
-from config import LOG_DIR, HOST, PORT
+from config import LOG_DIR, HOST, PORT, SECRET_KEY
 
 
 def main() -> int:
@@ -19,6 +19,9 @@ def main() -> int:
     ensure_dir(LOG_DIR)
     log_level = DEBUG if args.verbose else INFO
     setup_logging(app, log_level)
+    if SECRET_KEY is None:
+        app.logger.error("Setup you FLASKAPP_KEY environment variable first in order to run the application!")
+        return ExitCode.FAILURE.value
     # Run server
     app.run(host=HOST, port=PORT, debug=DEBUG)